An investigation of the influence of light-induced atomic desorption (LIAD) on the transmission spectra from point of view of LIAD application for miniaturization of magneto-optical sensors and anti-relaxation coatings diagnostics is reported. With reduction of the dimensions of the cells, the amplitude of the signals decreases and it can be compensated by increasing the atomic density with temperature using special high temperature anti-relaxation coatings, or by LIAD. LIAD is a non-thermal process in which atoms adsorbed at a surface are released under illumination. It is investigated in various papers and has different applications - vapor density stabilization, MOT loading, surface nanostructuring etc. In this work the dependence of the shape of the absorption spectra on the laser power and blue light power is measured and analysis of the influence of different factors is done. All measurements are performed on the Rb D2 line in 3 different vacuum cells (uncoated, paraffin coated and SC-77 coated) with a 460 nm light emitting diode illumination. The good knowledge of the factors influencing the alkali atom spectra will be useful not only for the development of new alloptical sensors, but for study atom-dielectric surface interactions and development of new all-optical methods for surface and coating diagnostics.
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|Titolo:||Light-induced atomic desorption for miniaturization of magneto-optical sensors|
|Citazione:||S., G., M., T., V., S., Mariotti, E., & S., C. (2013). Light-induced atomic desorption for miniaturization of magneto-optical sensors. In Proceedings of the 17th International School on Quantum Electronics: Laser Physics and Applications (pp.87700O-1-87700O-8). Bellingham: SPIE..|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|